log off script that prevents loggoff if user has app open

Users are logging off in terminal server without shutting down a

certain msaccess application .

My solution which I haven't implement yet, is run a logoff script that

checks whether the LDB is present in the local directory and prevent

logoff if it exists.

Problem is, users could close the batch file and bypass shutting down

the application correctly.

Is there another better approach??

cheers

Astro